Canadian Weather Briefing

Home › Pilot Guides › Canadian Weather Briefing

In Canada, you get a weather briefing online through NAV CANADA's Collaborative Flight Planning Services (CFPS) at plan.navcanada.ca, or by phone from a Flight Information Centre at 1-866-WX-BRIEF (1-866-992-7433); both are free. The METARs and TAFs will look familiar to any US-trained pilot. The product that won't is the Graphical Area Forecast (GFA), which replaces the textual area forecast entirely, and the regulation behind it all is CARs 602.71, Canada's version of 91.103.

Where do Canadian pilots get a weather briefing?

Canada's air navigation services are run by NAV CANADA, a private non-profit rather than a government agency, and the briefing infrastructure reflects that: one national provider, two front doors.

Online: CFPS at plan.navcanada.ca

The primary online source is NAV CANADA's Collaborative Flight Planning Services (CFPS). It is a single web app that combines aviation weather, NOTAM briefings, and flight plan filing, amending, and cancelling. You create a free account, build a route, and CFPS assembles the METARs, TAFs, GFA panels, SIGMETs, AIRMETs, PIREPs, and NOTAMs relevant to it. Because the weather products and the flight plan live in the same tool, the workflow is closer to a modern EFB than to the old "read a wall of text, then phone someone" model.

By phone: the Flight Information Centres

For an interpretive briefing, Canada still has humans. Flight Information Centres (FICs) are staffed by flight service specialists who provide briefings, consultation on marginal or unusual weather, and flight plan filing. Within Canada, the number is 1-866-WX-BRIEF (1-866-992-7433). If you are staring at a GFA panel showing a trough draped across your route and you are not sure what it means for your afternoon, this is the call to make: the specialists brief Canadian weather all day and know the regional patterns.

The reference document behind all of it is the TC AIM (Transport Canada Aeronautical Information Manual), whose MET section explains each product in detail, the same role the AIM's weather chapters play in the US.

What is the GFA and how do I read it?

The single biggest adjustment for a US-trained pilot is the area forecast. Canada has no US-style textual area forecast. The planning product for the big picture is the Graphical Area Forecast (GFA): a set of regional chart panels covering the country, issued several times daily with fixed valid times.

Each GFA issue for a region comes as two panel types:

• Clouds and weather panel. Cloud bases and tops, visibility, precipitation, obstructions to vision, fronts and pressure systems, and organized weather areas outlined on the chart. This is where you find the question every VFR pilot is really asking: where are the ceilings, and which way are they moving?
• Icing, turbulence, and freezing level panel. Forecast icing areas with severity and altitudes, turbulence areas, and freezing level contours. For anything beyond a warm-day circuit, this panel decides whether the altitudes you can fly are altitudes you can survive in cloud.

How to read it, at a high level:

• Pick the panels whose valid times bracket your flight. Each GFA panel is a snapshot at a fixed valid time, not a range. For a flight between two valid times, read both panels and interpolate: if the ceiling boundary moves 100 miles between snapshots, assume it is somewhere in between when you are.
• Read the legend boxes, not just the picture. Organized weather areas on the chart carry annotations for cloud layers, visibility, and precipitation. The map shows you where; the text boxes tell you how bad.
• Note the IFR outlook. GFA cloud and weather panels include an outlook indicating where IFR, MVFR, or VFR conditions are expected beyond the panel's snapshot, which is your first hint about whether tomorrow morning's leg is realistic.
• Treat it as the route product. Just as in the US, a TAF covers only the terminal area. In Canada the GFA is what covers the 300 miles between your TAFs.

How is a Canadian briefing different from a US briefing?

Less different than most pilots expect, in the products; more different in the plumbing. Canadian METARs and TAFs use the same format as the US, and the altimeter setting is in inches of mercury just like at home, so your decoding skills transfer directly (if they need a refresh, start with how to read a TAF). The differences that matter:

A naming trap worth flagging: both countries have a product abbreviated "GFA," and they are not the same thing. The US GFA is an interactive web tool; the Canadian GFA is a set of issued chart panels with fixed valid times. When a Canadian briefer says GFA, they mean the panels.

Crossing the border as a US pilot

1800wxbrief and Leidos cover your US legs; for the Canadian portion of the route, use CFPS or call a FIC, because that is where the Canadian GFA, Canadian NOTAM briefing, and Canadian flight plan handling live. ICAO flight plans are required for cross-border flights, so file in ICAO format regardless of which side you file from. Two more Canadian preflight items deserve their own reading: Canadian NOTAMs work a little differently than the US system, and Canada's CYA, CYR, and CYD special-use airspace has no exact US counterpart.

What about the mountains and the north?

Southern-corridor Canada is well covered by METAR stations and TAFs. Get into the mountain passes of British Columbia or anywhere north of the populated strip and the reporting network thins out fast: long stretches of route with no METAR, no TAF, and terrain that manufactures its own weather between the stations that do exist.

NAV CANADA's answer is one of the most useful briefing tools on the continent: an extensive aviation weather camera network. The cameras sit at aerodromes and in passes where instruments are sparse, and they let you look at the actual sky in the actual pass before you commit to it. A GFA can tell you the forecast cloud base; a camera shows you whether the pass is open right now. For mountain and northern flying, checking the cameras along the route is not a nice-to-have, it is a core part of the brief.

The FICs earn their keep here too. A specialist who briefs the same mountain corridors every day can tell you how the forecast usually verifies in a given pass, which is exactly the kind of judgment a chart cannot encode.

Turning the briefing into a decision

The Canadian products change; the decision structure does not. You still reduce the brief to the same questions: ceilings and visibility along the whole route (GFA plus TAFs), icing and freezing levels against your usable altitudes, wind against your runways and your personal maximums, and NOTAMs against your departure, destination, and alternates. Our go/no-go decision framework walks through that structure step by step, and it applies unchanged on either side of the border.

If you plan with FlightDecide, Canadian airports are first-class citizens: the app pulls Canadian aerodrome data via NAV CANADA sources and applies the same scored go/no-go analysis it runs for US airports, and where a Canadian source cannot be reached it reports a coverage gap instead of pretending the check happened.

Related guides

Educational guide for flight-planning practice. It is advisory only and not an official weather briefing; the go/no-go decision rests with the pilot in command under 14 CFR 91.3 in the US and the CARs 602.71 familiarity requirement in Canada. Sources: CARs 602.71; TC AIM (MET section); plan.navcanada.ca; navcanada.ca Aviation Weather Services Guide. Last reviewed: July 20, 2026.